1. We heard the wailing of fire-engine sirens.
   我们听到救火车汽笛的尖啸声。
2. Two fire engines arrived shortly after the fire blazed up.
   起火后不久两辆救火车就赶到了。
3. Three fire engines were dispatched to combat the blaze.
   调遣了三辆消防车去救火。
4. The fire station bought a fire engine.
   消防站购买了一台消防车
5. The fire engine throws a long stream of water.
   (这辆)消防车喷出长长的水柱。

　1个名词解释